NCERT Exercise 2.16 - Motion in a Straight Line
Question: Figure 2.13 gives the x-t plot of a particle executing one-dimensional simple harmonic motion. Give the signs of position, velocity and acceleration at t = 0.3 s, 1.2 s, ?1.2 s.
Answer: t = 0.3 s: x-, v-, a+; t = 1.2 s: x+, v+, a-; t = -1.2 s: x-, v+, a+.
Full step-by-step NCERT solution with diagrams on Something by Zero.